i.MX ProcessorsのトピックRe: Can I use buffer allocated by g2d_alloc() in V4L2 capture? https://community.nxp.com/t5/i-MX-Processors/Can-I-use-buffer-allocated-by-g2d-alloc-in-V4L2-capture/m-p/719599#M111840 <HTML><HEAD></HEAD><BODY><P>Hi Dustin</P><P></P><P>seems it is not good approach as graphics are handled by gpu drivers</P><P>described in sect.5.1 Graphics Processing Unit (GPU) and they are different</P><P>from V4L2 drivers, described in sect.6.1.2.1.2.1 Video for Linux 2 (V4L2) APIs</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 21 Nov 2017 01:38:02 GMT igorpadykov 2017-11-21T01:38:02Z Can I use buffer allocated by g2d_alloc() in V4L2 capture? https://community.nxp.com/t5/i-MX-Processors/Can-I-use-buffer-allocated-by-g2d-alloc-in-V4L2-capture/m-p/719598#M111839 <HTML><HEAD></HEAD><BODY><P>In order to save copy time between capture buffer and fb device buffer, we try to use g2d_alloc() to get buffer which transfers into V4L2 driver with V4L2_MEMORY_USERPTR.</P><P>I wanna know whether it is right in the process.</P></BODY></HTML> Sun, 19 Nov 2017 12:41:51 GMT https://community.nxp.com/t5/i-MX-Processors/Can-I-use-buffer-allocated-by-g2d-alloc-in-V4L2-capture/m-p/719598#M111839 dustinzhu 2017-11-19T12:41:51Z Re: Can I use buffer allocated by g2d_alloc() in V4L2 capture? https://community.nxp.com/t5/i-MX-Processors/Can-I-use-buffer-allocated-by-g2d-alloc-in-V4L2-capture/m-p/719599#M111840 <HTML><HEAD></HEAD><BODY><P>Hi Dustin</P><P></P><P>seems it is not good approach as graphics are handled by gpu drivers</P><P>described in sect.5.1 Graphics Processing Unit (GPU) and they are different</P><P>from V4L2 drivers, described in sect.6.1.2.1.2.1 Video for Linux 2 (V4L2) APIs</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 21 Nov 2017 01:38:02 GMT https://community.nxp.com/t5/i-MX-Processors/Can-I-use-buffer-allocated-by-g2d-alloc-in-V4L2-capture/m-p/719599#M111840 igorpadykov 2017-11-21T01:38:02Z